A circular, single or multipiece item, metallic or nonmetallic in composition, designed to be fitted in a circumferential groove in a piston and to spring outward against the cylinder wall to function as a seal or wiper. It is supplied in various cross-sectional shapes and is cut through at one point to allow for installation in the piston ring groove. It may include an expander. Excludes packing, preformed; retainer, oil seal; retainer, packing; ring, retaining; ring wiper; and seal ring, metal.
Classification: Parts for steam turbines
NSN 5910-01-615-4654
NSN 4140-00-122-6422
NSN 5855-01-088-8700
NSN 5895-00-973-5955
NSN 6620-01-556-9512
NSN 6620-01-147-5615
NSN 5895-01-210-2604
NSN 5950-00-155-4753
NSN 2925-01-254-3068
NSN 7035-00-981-7216
NSN 6650-01-433-3056
NSN 6620-01-034-7636